Manga by author Shou Uyoshi

During the school trip Touka and his classmates are summoned to another world.However, Touka was the only one with the lowest rank: E-rank an extremely low status compared to his classmates. Thus, the former mob-character and abandoned hero, will absolutely become the strongest devil as he advances and strikes back.

During the school trip Touka and his classmates are summoned to another world. However, Touka was the only one with the lowest rank: E-rank an extremely low status compared to his classmates. Thus, the former mob-character and abandoned hero, will absolutely become the strongest devil as he advances and strikes back.